As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN ACRID ELECTRICAL TYPE SMELL WAS NOTED IN THE COCKPIT AND CABIN WHEN ENGINE ANTI-ICE WAS TURNED ON. FOUND A PINHOLE CRACK IN A HYDRAULIC LINE, AND THE LEAK WAS GETTING INTO THE AIR CONDITIONING SYSTEM. FABRICATED AND REPLACED THE LINE ON THE RT SIDE OF THE TAIL COMPARTMENT AT THE RT ELEVATOR ACCUMULATOR. CHECK-C 9-19-99 STL.